This is my first attempt at something creepy. It's based on folklore and I know it's basically a poltergeist, but I think that I've added a twist. But if you think it's boring, please tell me. No point us wasting our time.

I know the image isn't in the usual place, but I don't want to spoil the containment procedures by just saying "it's a haunted house."

You call this thing lonely. A lonely ghost who just wants folk to stick around is a pretty interesting idea. But I don't see that here. I just see a basic haunted house with a tacked on requirement to keep people inside. You need to do a better job of bringing out the "lonely ghost" story.

To that effect, I would suggest you try making it less creepy and more friendly. Possibly even give it interactions with the d-class. There's nothing that says it has to be benevolent or completely safe… but that *would* be an interesting tack to take.

And there'd be nothing wrong with putting the image further up the article, but there's nothing that says you have to.

Thanks for the feedback. I'll have to think about how I can convey the idea that I want to.
Maybe if I get rid of the part where it traps people in the house, but keep the part where it leaves the house if nobody is there? I'm worried about that being too boring, and very close to plagiarism of a book that sort of inspired this (the idea of a boggart, at least). I'll try a rewrite some time.